CVE-2026-114611 OCO-Server - Authentication Bypass

OCO-Server < 1.2.3 contains a broken authentication caused by improper PKCS#7 signature verification with PKCS7_NOVERIFY in frontend/api-mdm.php, letting attackers impersonate victim devices and hijack MDM relationships, exploit requires knowledge of a registered device's serial number.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
22 October 2026
Updated
23 October 2026
Weakness
CWE-295

Vendor fix

Update to version 1.2.3 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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